Nitrate/Nitrite Test Kit:
This system is acceptable for treatment of influent concentration of no more than 27mg/L
nitrate and 3mg/L nitrite in combination measured as N.* This system is supplied with a nitrate/
nitrite test kit. Product water should be monitored periodically according to the instructions
provided with the test kit.
Drain Flow Restrictor
The restrictor is vital for proper operation of the RO membrane cartridge as it keeps water
flowing through the membrane at the proper rate ensuring the water produced is the best
quality. It is recommended the restrictor assembly be periodically inspected to be sure it is
clean and unrestricted. If service is required on the drain flow assembly, disassemble and
reassemble as outlined in Step Six.
Flow rate and output are determined by 3 factors:
1
Incoming water temperature
2
Total dissolved solids (TDS) present in supply water
3
Incoming water pressure
Lower temperatures are directly proportional to slower flow rate. All membranes are tested at
77°F. Incoming water temperature should not exceed 100°F. The RO Filter System should also
not be installed in a location susceptible to freezing. The more TDS in the supply water, greater
filter time is required. Incoming TDS should not exceed 1000 ppm. Higher water pressure
enables a higher flow rate. Pressure must be above 40 psi for proper system operation. You may
consider installing a booster pump if your pressure is below 40 psi.